Carl grtjlsrzweig



(No Model.)

C. G'RNZWEIG".

PAPER PASTBNER.

110.451,710. PatentedMay 5,1891.

#urnas '5 Nrrnn STATES 'ATRNT Prion.

CARL GRNZ\VEIG, OF LUDVIGSHAFEN-ON-TIIF-RHINE, GERMANY.

PAPER-FASTENER.

SPECIFICATION forming part of Letters PatentV No. 451,710, dated May 5, 1891. Application filed September 25, 1890. Serial No. 366,076. (No niodel.)

To all whom it may concern:

Be it known that I, CARL GRNZWEIG, a subject of the King of Bavaria, residing` at Ludwigshafen-on-the-Rhine, in the Kingdom of Bavaria, German Empire, have invented new and useful Improvements in a Device foi-Fastening Together Newspapers, Invoices, and other Loose Documents or Papers, 0f which the following is a specification.

This invention relates to a device for fastening together newspapers, invoices, and other loose documents or papers, duc., so that they can with facility be separately removed without injury.

In the accompanying drawings, Figure l is a vertical longitudinal section of my improved paper-fastener, showing sheets held by the same. Fig. 2 is a side view of the fastener distended. Fig. 3 is a top view of the same. Fig. Il is a longitudinal sectional view of a modification of the fastener. Fig. 5 is a plan view of the same. Fig. 6 is a side view of another modification, and Fig. 7 is a plan view of the same.

The invention, which will be described with reference to the accompanying drawings, consists in a fastener in the form of a solid or hollow elastic shank a, Fig. 4, provided in its length with one or more hollow elastic buttons or projections b and at its lower end with a headvc. The papers or other articles to be fastened together having been perforated, the shank a is passed through them, and the tension which is applied to the shank in drawing it through the papers causes the elastic button -b to become depressed or distended, so

that it will pass through the perforation in the papers, the., whereupon it will instantly expand as soon as the pull on the shank ceases. The documents are then conned, as

can be seen from Fig. 1, between the projec tion b and the head c. In order to remove the documents from the fastener, the head c is pulled, so that the elastic button bl can be drawn through the perforation exactly as before.

In Fig. 2 the shank a is represented in its distended condition, the elastic button l) having disappeared in consequence of the pull exerted npon the shank. The shank ain the drawings is shown hollow; but it. may be solid, as above stated.

I do not confine myself to the form of the button b, which may be spherical, dished, or of other form; but it is essential that it should be hollow. These forms may have recesses, perforations, or excisions, Figs. 4 and 5.

A ring c', held by an enlargement bon the .end of the shank a, as in Fig. 4, may replace the head c.

The shank a may, instead of being made of elastic material, be composed of a rigid metallic tube or a metallic rod, the elastic button l) being xed between the two parts.

Having now fnllydescribed and ascertained the nature of my said invention and in what manner the same is to be performed, I de-4 

